US3859976A - Internal combustion engine - combustion control piston - Google Patents

Internal combustion engine - combustion control piston Download PDF

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Publication number
US3859976A
US3859976A US378432A US37843273A US3859976A US 3859976 A US3859976 A US 3859976A US 378432 A US378432 A US 378432A US 37843273 A US37843273 A US 37843273A US 3859976 A US3859976 A US 3859976A
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United States
Prior art keywords
piston
connecting rod
pin
internal combustion
pivotly
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Expired - Lifetime
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US378432A
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Edward M Mcwhorter
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
    • F02B41/02—Engines with prolonged expansion
    • F02B41/04—Engines with prolonged expansion in main cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/36—Modified dwell of piston in TDC
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2144—Yieldable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2142—Pitmans and connecting rods
    • Y10T74/2162—Engine type

Definitions

  • the upper extreme end of the connecting rod is pivotly journaled in a piston sleeve which is slidably mounted on the interior surfaces of the piston.
  • the lower end of the connecting rod is rotatively mounted on the crankpin. Reactive forces generated by rotation of the crankpin about the crankshaft as its revolves are transmitted to the piston through the connecting rod and the intermediate linkage as a lever of the second class.
  • the primary object of this invention is to provide, in 5 journal 7. At both ends of pin 8 said connecting link 3 a manner as herinafter set forth, an engine of the afore mentioned character comprising a plurality of pistons and piston connecting rods in which the reciprocating motion of the piston is not limited to the motion imposed by the engine crankshaft crankpin.
  • Another very important object of .the invention is to provide an engine of the character described which will allow an initial design setting and an allowance for the mechanical adjustment of the piston position in such a manner as to decrease the amount of harmful emission in the exhaust product during the combustion process.
  • Another important object of the invention is to provide an engine of the character described in which the initial piston setting at the top-dead-center position is such that the combustion pressure during the initial expansion cycle is delayed thereby allowing the crankshaft to develope more efficient crank angles at the higher cylinder pressures and thereby increasing the net rotative effort.
  • FIG. 1 is a perspective view principally in vertical longitudinal section through a portion of a piston constructed in accordance with the present invention.
  • the assembly, said piston connecting rod 1, said pin 5 in said journal 4, and said pin 8 in said journal 7 constitute a lever of the second class which when pivoted about said wrist pin 5 activate the said connecting link 3 which contains said pin 9 which is pivotly mounted at both ends in said piston 2 bosses 10 which cause the piston to rise or fall relative to the position of said pin 5.
  • the said piston connecting rod 1 is rotatably mounted on the engine crankpin 13 in the conventional manner by journal 11 held in place by bolts 12.
  • a piston a piston slide slidably mounted inside said piston, a wrist pin extending transversly across said piston slide each end of which is pivotly mounted in said piston slide, a connecting rod having a small journal at one end which holds said wrist pin, below said small journal and positioned at one side of the longitudinal axis of said connecting rod a second small journal on said connecting rod, said second small journal holding a pin, the ends of said pin extending to both sides of said connecting rod, a connecting link being pivotly attached to each end of said pin, said connecting link holding a second pin also pivotly attached, said second pin extending transversely across said piston and journaled at each end in said piston, at the opposite end of said connecting rod a large journal for rotatively mounting on an internal combustion engine crankpin.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

This invention relates to new and useful improvements in the mechanism comprising the piston and piston connecting rod of the internal combustion engine. In the subject disclosure, the combustion pressure forces acting on the piston are transferred to the connecting rod through an intermediate linkage. The linkage is pivotly journaled to the piston at one end and to the connecting rod at the other end at a point below the connecting rod wrist pin. The upper extreme end of the connecting rod is pivotly journaled in a piston sleeve which is slidably mounted on the interior surfaces of the piston. The lower end of the connecting rod is rotatively mounted on the crankpin. Reactive forces generated by rotation of the crankpin about the crankshaft as its revolves are transmitted to the piston through the connecting rod and the intermediate linkage as a lever of the second class.

Description

United States Patent 1 McWhorter [4 1 Jan. 14, 1975 INTERNAL COMBUSTION ENGINE COMBUSTION CONTROL PISTON Primary Examiner-Manuel A. Antonakas Assistant Examiner-Daniel J. O'Connor [57] ABSTRACT This invention relates to new and useful improvements in the mechanism comprising the piston and. piston connecting rod of the internal combustion engine. In the subject disclosure, the combustion pressure forces acting on the piston are transferred to the connecting rod through an intermediate linkage. The linkage is pivotly journaled to the piston at one end and to the connecting rod at the other end at a point below the connecting rod wrist pin. The upper extreme end of the connecting rod is pivotly journaled in a piston sleeve which is slidably mounted on the interior surfaces of the piston. The lower end of the connecting rod is rotatively mounted on the crankpin. Reactive forces generated by rotation of the crankpin about the crankshaft as its revolves are transmitted to the piston through the connecting rod and the intermediate linkage as a lever of the second class.
1 Claim, 1 Drawing Figure il i PATENTED JAN 1 4 I875 INTERNAL COMBUSTION ENGINE COMBUSTION CONTROL PISTON SUMMARY OF THE DISCLOSURE The primary object of this invention is to provide, in 5 journal 7. At both ends of pin 8 said connecting link 3 a manner as herinafter set forth, an engine of the afore mentioned character comprising a plurality of pistons and piston connecting rods in which the reciprocating motion of the piston is not limited to the motion imposed by the engine crankshaft crankpin.
Another very important object of .the invention is to provide an engine of the character described which will allow an initial design setting and an allowance for the mechanical adjustment of the piston position in such a manner as to decrease the amount of harmful emission in the exhaust product during the combustion process.
Another important object of the invention is to provide an engine of the character described in which the initial piston setting at the top-dead-center position is such that the combustion pressure during the initial expansion cycle is delayed thereby allowing the crankshaft to develope more efficient crank angles at the higher cylinder pressures and thereby increasing the net rotative effort.
Other objects of the invention are to provide an engine of the character described which will allow its beneficial operation within the conditions of the several engine combustion cycles employed in the reciprocating type of internal combustion engine.
All of the foregoing and still further objects and advantages of the invention will become apparent from a study of the following specification and drawing presented.
BRIEF DESCRIPTION OF THE DRAWINGS There is presented, as part of .the specification, a drawing which shows the components comprising the invention.
FIG. 1 is a perspective view principally in vertical longitudinal section through a portion of a piston constructed in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT is pivotly mounted. The center of pin 9 is journaled in said connecting link 3 and in the piston bosses [0 of said piston 2 at each end.
The assembly, said piston connecting rod 1, said pin 5 in said journal 4, and said pin 8 in said journal 7 constitute a lever of the second class which when pivoted about said wrist pin 5 activate the said connecting link 3 which contains said pin 9 which is pivotly mounted at both ends in said piston 2 bosses 10 which cause the piston to rise or fall relative to the position of said pin 5. The said piston connecting rod 1 is rotatably mounted on the engine crankpin 13 in the conventional manner by journal 11 held in place by bolts 12.
When the engine crankshaft revolves it causes the said piston connecting rod 1 angle to change relative to the cylinder axial centerline by pivoting on said pin 5. The changing of the said angle causes said connecting linkage 3 to exert a force on said pin 9 which causes the said piston 2 to be raised or lowered relative to the position of said pin 5. Operation in this manner, considered in conjunction with the motion imparted to the said piston 2 by the engine crankpin 13, allows a greater margin of control of the working volumes above the said piston 2 as they develope during the combustion cycle which when analytically determined and set are more conducive to complete and efficient fuel combustion.
What is claimed is:
1. In an internal combustion engine, a piston, a piston slide slidably mounted inside said piston, a wrist pin extending transversly across said piston slide each end of which is pivotly mounted in said piston slide, a connecting rod having a small journal at one end which holds said wrist pin, below said small journal and positioned at one side of the longitudinal axis of said connecting rod a second small journal on said connecting rod, said second small journal holding a pin, the ends of said pin extending to both sides of said connecting rod, a connecting link being pivotly attached to each end of said pin, said connecting link holding a second pin also pivotly attached, said second pin extending transversely across said piston and journaled at each end in said piston, at the opposite end of said connecting rod a large journal for rotatively mounting on an internal combustion engine crankpin.

Claims (1)

1. In an internal combustion engine, a piston, a piston slide slidably mounted inside said piston, a wrist pin extending transversly across said piston slide each end of which is pivotly mounted in said piston slide, a connecting rod having a small journal at one end which holds said wrist pin, below said small journal and positioned at one side of the longitudinal axis of said connecting rod a second small journal on said connecting rod, said second small journal holding a pin, the ends of said pin extending to both sides of said connecting rod, a connecting link being pivotly attached to each end of said pin, said connecting link holding a second pin also pivotly attached, said second pin extending transversely across said piston and journaled at each end in said piston, at the opposite end of said connecting rod a large journal for rotatively mounting on an internal combustion engine crankpin.
US378432A 1973-07-12 1973-07-12 Internal combustion engine - combustion control piston Expired - Lifetime US3859976A (en)

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US378432A US3859976A (en) 1973-07-12 1973-07-12 Internal combustion engine - combustion control piston

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908623A (en) * 1974-08-23 1975-09-30 Edward M Mcwhorter Advanced reciprocating engine system
US4089235A (en) * 1976-06-07 1978-05-16 Mcwhorter Edward Milton Intra-articulate connecting rod for small engines
US4222260A (en) * 1978-05-15 1980-09-16 Wsp Industries Corporation Warm forging of connecting rod caps
WO1983004077A1 (en) * 1982-05-10 1983-11-24 Caterpillar Tractor Co. A locking retainer
US4463710A (en) * 1981-12-07 1984-08-07 Mcwhorter Edward M Engine connecting rod and piston assembly
US4836043A (en) * 1982-05-10 1989-06-06 Caterpillar Inc. Connecting rod assembly
US5072654A (en) * 1990-01-18 1991-12-17 Detroit Diesel Corporation Piston and bearing assemblies
US5072653A (en) * 1988-07-16 1991-12-17 Jaguar Cars Limited Piston biased to one side to cover ring gap
US5112145A (en) * 1990-01-18 1992-05-12 Detroit Diesel Corporation Piston and bearing assemblies
US5119663A (en) * 1991-01-11 1992-06-09 Masco Industries, Inc. Method and apparatus for cold extruding universal seal crosspieces
US5156121A (en) * 1990-05-30 1992-10-20 Routery Edward E Piston-connecting rod assembly
US5239958A (en) * 1992-08-11 1993-08-31 Booher Benjamin V Delay stroke piston and rod for engine
US5245962A (en) * 1991-11-22 1993-09-21 Routery Edward E Variable length connecting rod for internal combustion engine
WO1995006804A1 (en) * 1992-08-11 1995-03-09 Booher Benjamin V Delay stroke piston and rod for engine
US20050150471A1 (en) * 2004-01-09 2005-07-14 Ford Global Technologies Llc Variable compression ratio connecting rod for internal combustion engine
CN103850790A (en) * 2014-03-18 2014-06-11 尹建 Reciprocating internal combustion engine without dead point
WO2016145733A1 (en) * 2015-03-17 2016-09-22 尹建 Piston connection rod set for reciprocating piston chained connection rod dead-point-free engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379115A (en) * 1919-06-19 1921-05-24 Mallory Marion Internal-combustion engine
US1430491A (en) * 1922-03-08 1922-09-26 Calcaterra Joseph Means to prevent dead centers in engines
US1671708A (en) * 1926-10-28 1928-05-29 Karl Birger Wosse Piston and connecting rod
US3034362A (en) * 1960-07-21 1962-05-15 Alfred M Caddell Crank actuated means for retaining fluid pressure at top center

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1379115A (en) * 1919-06-19 1921-05-24 Mallory Marion Internal-combustion engine
US1430491A (en) * 1922-03-08 1922-09-26 Calcaterra Joseph Means to prevent dead centers in engines
US1671708A (en) * 1926-10-28 1928-05-29 Karl Birger Wosse Piston and connecting rod
US3034362A (en) * 1960-07-21 1962-05-15 Alfred M Caddell Crank actuated means for retaining fluid pressure at top center

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908623A (en) * 1974-08-23 1975-09-30 Edward M Mcwhorter Advanced reciprocating engine system
US4089235A (en) * 1976-06-07 1978-05-16 Mcwhorter Edward Milton Intra-articulate connecting rod for small engines
US4222260A (en) * 1978-05-15 1980-09-16 Wsp Industries Corporation Warm forging of connecting rod caps
US4463710A (en) * 1981-12-07 1984-08-07 Mcwhorter Edward M Engine connecting rod and piston assembly
WO1983004077A1 (en) * 1982-05-10 1983-11-24 Caterpillar Tractor Co. A locking retainer
US4836043A (en) * 1982-05-10 1989-06-06 Caterpillar Inc. Connecting rod assembly
US5072653A (en) * 1988-07-16 1991-12-17 Jaguar Cars Limited Piston biased to one side to cover ring gap
US5112145A (en) * 1990-01-18 1992-05-12 Detroit Diesel Corporation Piston and bearing assemblies
US5072654A (en) * 1990-01-18 1991-12-17 Detroit Diesel Corporation Piston and bearing assemblies
US5156121A (en) * 1990-05-30 1992-10-20 Routery Edward E Piston-connecting rod assembly
US5119663A (en) * 1991-01-11 1992-06-09 Masco Industries, Inc. Method and apparatus for cold extruding universal seal crosspieces
US5245962A (en) * 1991-11-22 1993-09-21 Routery Edward E Variable length connecting rod for internal combustion engine
US5239958A (en) * 1992-08-11 1993-08-31 Booher Benjamin V Delay stroke piston and rod for engine
WO1995006804A1 (en) * 1992-08-11 1995-03-09 Booher Benjamin V Delay stroke piston and rod for engine
US20050150471A1 (en) * 2004-01-09 2005-07-14 Ford Global Technologies Llc Variable compression ratio connecting rod for internal combustion engine
US7028647B2 (en) 2004-01-09 2006-04-18 Ford Global Technologies, Llc Variable compression ratio connecting rod for internal combustion engine
CN103850790A (en) * 2014-03-18 2014-06-11 尹建 Reciprocating internal combustion engine without dead point
CN103850790B (en) * 2014-03-18 2016-03-30 尹建 Without dead point reciprocating internal combustion engine
WO2016145733A1 (en) * 2015-03-17 2016-09-22 尹建 Piston connection rod set for reciprocating piston chained connection rod dead-point-free engine

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